GREAT VALUE: This is a replacement filter for air purifiers, to help effectively filter airborne particles for healthier living. Each filter includes 1 LifeSupplyUSA True HEPA Filter Replacement Compatible with Hunter HEPAtech Tower 30964, 30965, 30715, 30716, 30717, 30770, 30771 Air Purifier (3-Pack). Approximate dimensions are: 17.52' x 6.5' x 1.97' inches COMPATIBILITY: Compatible with Hunter HEPAtech Tower 30964, 30965, 30715, 30716, 30717, 30770, 30771 Air Purifier Filters. Please note that this is not an OEM product. This is a replacement product by LifeSupplyUSA, exclusively for sale by LifeSupplyUSA. QUALITY HEPA: High-Efficiency Particulate Air (HEPA) design will capture very fine particles and irritants. It targets airborne particles such as dust, lint, dirt, pet hair, dander, pollen, and more.